Jul 09, 2018
06:05 PM
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Jul 09, 2018
06:05 PM
Hi
i want to configure a pin as both input and output, such emulate SDA of i2c master, what driver mode should i use to make it work ?
i tried strong driver/ pull up/down, found output works fine but input can't read right value in strong driver mode,
and in pull up/down, output can't driver right voltage.
appreciate your help and sharing your experience, thanks.
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PSoC 5LP
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Jul 10, 2018
07:18 AM
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Jul 10, 2018
07:18 AM
Use "Open Drain drives low" and an external pull-up resistor (5k), set initial drive state to "high". This is what I2C uses.
Bob
3 Replies